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		<title>6.3. Diagram preferences</title>
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		<h1 id="Diagram_Preferences">Diagram Preferences</h1>
		<p>By default, &ldquo;
			<b>Automatic Refresh</b>&rdquo; is set to true (see the Eclipse Window / Preferences / Viewpoint page): this means diagrams always display the latest state of the model. There are at least two cases where it is recommended to rely on manual rather than automatic refresh:
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			<li>When diagrams size grows, it might be necessary to disable automatic 	refresh in order to improve performance. In that case, new 	calculated elements can be displayed on a diagram by performing a 	manual refresh through the specific toolbar Refresh button or by 	reopening the diagram.</li>
			<li>When several users collaborate on the same model using Clearcase or 	SVN.</li>
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		<p>&ldquo;
			<b>Do refresh on representation opening</b>&rdquo; specifies whether a refresh is systematically performed when opening a diagram. Unless working in a collaborative environment with Clearcase or SVN, this option should be set to True.
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		<p>The option &ldquo;
			<b>Always create a aird fragment on control</b>&rdquo; should always be activated. It allows keeping the model and representation files fragmented accordingly.
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			<i>The two other options in this page are irrelevant in the context of Capella.</i>
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		<p>The &ldquo;
			<b>Viewpoint Diagram</b>&rdquo; subsection contains a set of preferences specifically related to diagrams.
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		<p>Then, you can manage diagrams settings such as diagrams appearances, connection style, general printing settings and rulers &amp; grids options.</p>
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